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<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE chapter SYSTEM "chapter.dtd">
<chapter>
<header>
<copyright>
<year>2019</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
</legalnotice>
<title>Deprecations</title>
<prepared></prepared>
<docno></docno>
<date></date>
<rev></rev>
<file>deprecations.xml</file>
</header>
<section>
<title>Introduction</title>
<p>This document aim to list all deprecated functionality in Erlang/OTP. It
was introduced as of OTP 22, and have not yet been updated with all old
deprecations. Deprecations made in other parts of the documentation are of
course still valid. For more information regarding the strategy regarding
deprecations see the documentation of
<seealso marker="../system_principles/misc#deprecation">Support, Compatibility,
Deprecations, and Removal</seealso>.</p>
</section>
<section>
<marker id="OTP-22"/>
<title>OTP 22</title>
<section>
<title>VxWorks Support</title>
<p>Some parts of OTP has had limited VxWorks support, such as for
example <seealso marker="erl_interface:index"><c>erl_interface</c></seealso>.
This support is now deprecated and has also been
<seealso marker="scheduled_for_removal#OTP-23">scheduled for removal</seealso>.</p>
</section>
<section>
<title>Legacy parts of erl_interface</title>
<p>The old legacy <seealso marker="erl_interface:index"><c>erl_interface</c></seealso>
library (functions with prefix <c>erl_</c>) is deprecated as of OTP 22. These
parts of <c>erl_interface</c> has been informally deprecated
for a very long time. You typically want to replace the usage of
the <c>erl_interface</c> library with the use of the <c>ei</c> library
which also is part of the <c>erl_interface</c> application. The old legacy
<seealso marker="erl_interface:index"><c>erl_interface</c></seealso>
library has also been <seealso marker="scheduled_for_removal#OTP-23">scheduled
for removal</seealso>.</p>
</section>
</section>
<section>
<marker id="OTP-18"/>
<title>OTP 18</title>
<section>
<title>erlang:now()</title>
<p>New time functionality and a new time API was introduced. For more information
see the <seealso marker="erts:time_correction">Time and Time Correction</seealso>
chapter in the ERTS User's guide and specifically the
<seealso marker="erts:time_correction#Dos_and_Donts">Dos and Donts</seealso>
section on how to replace usage of <c>erlang:now()</c>.</p>
</section>
</section>
</chapter>
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